De or het terreinafbakening?

The correct Dutch article is:

de terreinafbakening

Rule Words ending in -ing: almost always de. See the rule

How to use terreinafbakening

the terreinafbakeningde terreinafbakening
this terreinafbakeningdeze terreinafbakening
that terreinafbakeningdie terreinafbakening
our terreinafbakeningonze terreinafbakening
your terreinafbakeningjouw terreinafbakening
every terreinafbakeningelke terreinafbakening
which terreinafbakening?welke terreinafbakening?
a big terreinafbakening / the big terreinafbakeningeen grote terreinafbakening, de grote terreinafbakening